Letter | Published:

Strontium isotope evidence for petrogenesis of Central American andesites

Naturevolume 277pages4445 (1979) | Download Citation

Subjects

Abstract

THE active volcanic belts of Mexico and of Central America can be considered in two groups (Fig. 1). The Mexican volcanic belt (MVB) forms an irregular line trending away from the Middle America Trench, running from Ceboruco and Colima in the west to San Martin on the Caribbean coast1. In contrast to the MBV, the active Central American volcanic belt runs some 1,200 km from southern Mexico (Tacaná) and Guatemala to Costa Rica, broadly parallel with the Middle America Trench1. With the exception of the alkaline volcano San Martin2, these are all calc-alkaline andesite volcanoes1. Between Mexico and El Salvador, the volcanic chain is built on a crust which includes Precambrian and Lower Palaeozoic crystalline rocks3,4. Southeast of El Salvador, in Nicaragua and Costa Rica the crust is composed mainly of Cainozoic volcanic and sedimentary rocks resting on Cretaceous ultramafic complexes3–6. This change in basement character does not seem to be reflected in the composition of volcanic rocks7. Here we report new Sr isotope data for Cainozoic volcanic rocks from Costa Rica, and by comparing these with earlier published data we conclude that all of these volcanic rocks have their origin in the mantle and that a sialic contribution to their origin is insignificant.

Access optionsAccess options

Rent or Buy article

Get time limited or full article access on ReadCube.

from$8.99

All prices are NET prices.

References

  1. 1

    Mooser, F., Meyer-Abich, H. & McBirney, A. R. Catalogue of the Active Volcanoes and Solfatara Fields of Central America, Active Volcanoes of Mexico 1(1975).

  2. 2

    Thorpe, R. S. Tectonophysics 40, 19 (1977).

  3. 3

    Dengo, G. Mem. Geol. Soc. Am. Buddington Vol. 133 (1962).

  4. 4

    Pichler, H. & Weyl, R. Geol. Rdsch. 62, 357 (1973).

  5. 5

    Pichler, H. Geol Rdsch. 64, 457 (1975).

  6. 6

    Dengo, G. in The Ocean Basins and Margins 3 (eds Mairn, A. E. M. & Stehli, F. G.) (Plenum, New York, 1975).

  7. 7

    McBirney, A. R. Proc. Andesite Conf. 185–189 (1969).

  8. 8

    Whitford, D. J. & Bloomfield, K. Yb. Carnegie Inst. Wash. 75, 207 (1975–76).

  9. 9

    Moorbath, S., Thorpe, R. S. & Gibson, I. L. Nature 271, 437 (1978).

  10. 10

    Pushkar, P. J. geophys. Res. 73, 2701 (1968).

  11. 11

    Rose, W. I. et al. J. Geol. 85, 63 (1977).

  12. 12

    Montigny, R., Javoy, M. & Allègre, C. Bull. Soc. Geol. Fr. 11, 794 (1969).

  13. 13

    O'Nions, R. K. & Pankhurst, R. J. Earth planet Sci. Lett. 21, 13 (1973).

  14. 14

    Pankhurst, R. J. & O'Nions, R. K. Chem. Geol. 12, 127 (1973).

  15. 15

    Meijer, A. Bull. geol. Soc. Am. 87, 1358 (1976).

  16. 16

    Hedge, C. E. & Lewis, J. F. Contr. Mineral. Petrol. 32, 39 (1971).

  17. 17

    Pushkar, P., Steuber, J. F. Tomblin, J. F. & Julian, G. M. J. geophys. Res. 78, 1279 (1973).

  18. 18

    Faure, G. & Powell, J. L. Strontium Isotope Geology (Springer, New York, 1972).

  19. 19

    McBirney, A. R. A. Rev. Earth planet. Sci. 6, 437 (1978).

  20. 20

    Brooks, C., Hart, S. R., Hofmann, A. & James, D. E. Earth planet. Sci. Lett. 32, 51 (1976).

  21. 21

    Sun, S. S. & Hanson, G. N. Geology 3, 297 (1975).

  22. 22

    Hofmann, A. W. & Hart, S. R. Earth planet. Sci. Lett. 38, 44 (1978).

  23. 23

    Hedge, C. E. Earth planet. Sci. Lett. 38, 88 (1978).

  24. 24

    Hawkesworth, C. J., O'Nions, R. K., Pankhurst, R. J., Hamilton, P. J. & Evensen, N. M. Earth planet. Sci. Lett. 36, 253 (1977).

  25. 25

    Hawkesworth, C. J. et al. Earth planet Sci. Lett. (in the press).

  26. 26

    Mysen, B. O. & Boettcher, A. L. J. Petrol. 16, 549 (1975).

  27. 27

    Allègre, C. J. & Condomines, M. Earth planet. Sci. Lett. 28, 395 (1976).

Download references

Author information

Affiliations

  1. Department of Earth Sciences, The Open University, Milton Keynes, Buckinghamshire, UK

    • R. S. THORPE
    •  & P. W. FRANCIS
  2. Department of Geology and Mineralogy, Parks Road, Oxford, UK

    • S. MOORBATH

Authors

  1. Search for R. S. THORPE in:

  2. Search for P. W. FRANCIS in:

  3. Search for S. MOORBATH in:

About this article

Publication history

Received

Accepted

Issue Date

DOI

https://doi.org/10.1038/277044a0

Further reading

Comments

By submitting a comment you agree to abide by our Terms and Community Guidelines. If you find something abusive or that does not comply with our terms or guidelines please flag it as inappropriate.